WO2011097810A1

WO2011097810A1 - Method and apparatus for user terminal equipment accessing to network equipment

Info

Publication number: WO2011097810A1
Application number: PCT/CN2010/070658
Authority: WO
Inventors: 杨涛
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯
Priority date: 2010-02-11
Filing date: 2010-02-11
Publication date: 2011-08-18
Also published as: CN102763469A; CN102763469B

Abstract

A method and apparatus for a user terminal equipment accessing to a network equipment are provided by the present invention. Multiple component carriers are set in a receiving channel of the network equipment. The network equipment obtains component carrier correlative information about multiple component carriers; and according to the component carrier correlative information, in multiple component carriers, determines at least one component carrier for transmitting a accessing request or transmitting a accessing request again for the user terminal equipment; and transmits component carrier indication information to the user terminal equipment, and the component carrier indication information indicates at least one component carrier. Base on the component carrier correlative information, the network equipment reasonably distributes component carriers for transmitting an accessing request or transmitting an accessing request again for the user terminal equipment according to the holistic or partial condition of the system, therefore, utilizing multiple component carrier resources effectively and improving the system performance.

Description

Method and device for user terminal equipment to access network equipment

Technical field

The present invention relates to access, and more particularly to a method and apparatus for accessing a network device by a user terminal device in a communication network employing carrier aggregation technology. Background technique

In the LTE (Long Term Evolution system) system, the user terminal equipment can only support one uplink component carrier (component carrier). Since the resources of the uplink access channel are limited, the user terminal equipment capable of simultaneously accessing one cell is also limited. A collision occurs when too many user terminal devices simultaneously compete for limited access channel resources to send access requests. The user terminal device that failed to send the access request needs to resend the access request. When the user terminal device resends the access request, it determines the time to resend the access request according to a backoff time value, thereby avoiding collision again.

In the LTE-A system, in order to provide a higher data transmission rate, a carrier aggregation technique is introduced in both the uplink and the downlink, that is, the mobile terminal device can simultaneously support a plurality of component carriers. For example, a user terminal device can support up to 5 component carriers over a 100M bandwidth. Summary of the invention

The inventors of the present invention have realized that in a communication network in which a carrier aggregation technology is introduced, since an existing user terminal device transmits an access request and retransmits an access request, the method can only be performed on one component carrier, and cannot Efficient use of multiple component carriers, so as to achieve the maximum performance of the communication system.

Based on the background art and the above-mentioned problems, it is very important to effectively utilize multiple component carrier resources if the user terminal device can transmit an access request. In addition, if the user terminal device can resend the access request, it can effectively utilize multiple Component carrier resources will be very beneficial. According to an embodiment of the first aspect of the present invention, there is provided a method for controlling a user terminal device to access the network device in a network device, the receiving channel of the network device being provided with a plurality of component carriers. The method includes the following steps:

A. acquiring component carrier related information about the plurality of component carriers;

B. determining, according to the component carrier related information, that the at least one component carrier is used by the user equipment device to send the access request or to send the access request again;

C. transmitting a component carrier indication information to the user terminal equipment, the component carrier indication information indicating the at least one component carrier.

Based on the component carrier related information, the network device can effectively utilize multiple component carrier resources according to the overall or desired component carrier of the system, thereby improving the performance of the communication system. According to an embodiment of the second aspect of the present invention, there is provided a method for accessing a network device in a user terminal device, the receiving channel of the network device being provided with a plurality of component carriers. The method includes the following steps:

Receiving, from the network device, a first component carrier indication information, the first component carrier indication information indicating at least one component carrier for the user terminal device to send an access request;

b. determining, according to the first component carrier indication information, a first component carrier for transmitting the access request in the at least one component carrier;

And transmitting, by the first component carrier, the access request to the network device, based on the first component carrier indication information, the user terminal device can reasonably determine the component carrier used for sending the access request, thereby Effectively utilize multiple component carrier resources to improve the performance of the communication system. According to an embodiment of the third aspect of the present invention, there is provided a control apparatus for controlling a user terminal device to access the network device in a network device, the receiving channel of the network device being provided with a plurality of component carriers . The control device comprises:

a first obtaining means for acquiring component carrier related information about the plurality of component carriers;

a determining device, configured to determine, according to the component carrier related information, at least one component carrier for the user terminal device to send the access request, among the plurality of component carriers;

A first transmitting device is configured to send a component carrier indication information to the user terminal device, the component carrier indication information indicating the at least one component carrier. According to an embodiment of the fourth aspect of the present invention, there is provided an access device for accessing a network device in a user terminal device, the receiving channel of the network device being provided with a plurality of component carriers. The access device includes:

a receiving device, configured to receive, from the network device, a first component carrier indication information, the first component carrier indication information indicating at least one component carrier for the user terminal device to send an access request;

a first determining means, configured to determine, according to the component carrier indication information, a first component carrier for transmitting the access request in the at least one component carrier;

a first transmitting device, configured to send the access request to the network device on the first component carrier.

DRAWINGS

The above and other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of the Description 1 is a flowchart of a method for controlling a user terminal device to access a network device in a network device according to an embodiment of the present invention;

2 is a flowchart of a method for controlling a user terminal device to access a network device in a network device according to still another embodiment of the present invention;

3 is a flowchart of a method for controlling a user terminal device to access a network device in a network device according to still another embodiment of the present invention;

4 is a flow chart of a method for accessing a network device in a user terminal device, in accordance with one embodiment of the present invention;

FIG. 5 is a flowchart of a method for accessing a network device in a user terminal device according to still another embodiment of the present invention; FIG.

6 is a flowchart of a method for accessing a network device in a user terminal device according to still another embodiment of the present invention;

Figure 7 is a block diagram of a control device in accordance with one embodiment of the present invention;

Figure 8 is a block diagram of a control device in accordance with still another embodiment of the present invention;

Figure 9 is a block diagram of a control device in accordance with still another embodiment of the present invention;

Figure 10 is a block diagram of an access device in accordance with one embodiment of the present invention;

Figure 11 is a block diagram of an access device in accordance with yet another embodiment of the present invention; and Figure 12 is a block diagram of an access device in accordance with yet another embodiment of the present invention.

The same or similar reference numerals in the drawings represent the same or similar components. detailed description

According to an embodiment of the first aspect of the present invention, there is provided a method for controlling a user terminal device to access the network device in a network device.

Network devices can be implemented in a variety of ways, such as base stations, relay stations, and the like. User terminal devices can be implemented in a variety of ways, such as mobile phones, laptops, PDAs, and the like.

The receiving channel of the network device is provided with a plurality of component carriers. The receiving channel of the network device is a channel used by the network device to receive user terminal device control information and/or data information, corresponding to a transmission channel of the user terminal device, for example, an uplink channel of the cellular communication system. The user terminal device accessing the network device refers to an operation performed by the user terminal device in order to establish a communication link with the network device. If the user terminal device can successfully access the network device, the user terminal device and the network device can continue to perform the next operation to establish a communication link; otherwise, the user terminal device needs to retry the operation of accessing the network device.

1 is a flow chart of a method for controlling a user terminal device to access a network device in a network device, in accordance with one embodiment of the present invention.

Referring to Figure 1, the method includes the step 110 of acquiring, by the network device, component carrier related information about a plurality of component carriers.

The component carrier related information is information related to a plurality of component carriers, for example, the number of access requests received by each component carrier of the plurality of component carriers, and the existing load amount of each component carrier of the plurality of component carriers (eg, transmission bits) Number, number of users), each of the plurality of component carriers corresponds to channel performance of the user terminal device (ie, channel performance between the user terminal device and the network device on a certain component carrier, such as bit error rate, signal dry Than) and other information. Optionally, the component carrier related information is a predetermined component carrier allocation rule corresponding to the multiple component carriers, where the predetermined component carrier allocation rule indicates a component carrier that can be used for an access operation (ie, sending and receiving an access request) And component carriers that are not available for access operations. The predetermined component carrier allocation rule may indicate only one component carrier or indicate a plurality of component carriers.

The method further includes the step 120, the network device determining, according to the component carrier related information, the at least one component carrier in the plurality of component carriers for the user terminal device to send the access request or to send the access request again.

The network device can determine at least one component carrier for the user terminal device to send an access request or resend the access request according to the component carrier related information in various manners.

In one embodiment, the component carrier related information is the number of access requests received by each of the plurality of component carriers. If the network device allows the user terminal device to send an access request on more than one component carrier, the number of access requests that each component carrier has received may be compared with a predetermined number of request thresholds, and the number of access requests is low. The component carrier at the threshold of the predetermined number of requests is determined to be used for the user terminal device to send an access request Or send the component carrier of the access request again. If the network device only allows the user terminal device to send an access request on one component carrier, the component carrier with the smallest number of access requests may be selected and determined to be used by the user terminal device to send an access request or resend the access request. Component carrier.

In yet another embodiment, the component carrier related information is an existing amount of load for each of the plurality of component carriers. If the network device allows the user terminal device to send an access request on more than one component carrier, the existing load amount of each component carrier may be compared with a predetermined load threshold, and the load amount is lower than the predetermined load amount. The component carrier of the threshold is determined to be a component carrier for the user terminal device to transmit an access request or to retransmit the access request. If the network device only allows the user terminal device to send an access request on one component carrier, the component carrier with the least amount of load may be selected and determined as a component carrier for the user terminal device to send an access request or resend the access request. .

In still another embodiment, the component carrier related information is a channel performance of each of the plurality of component carriers corresponding to the user terminal device. If the network device allows the user terminal device to send an access request on more than one component carrier, the channel performance of each component carrier corresponding to the user terminal device may be compared with a predetermined channel performance threshold, and the channel performance is lower than The component carrier of the predetermined channel performance threshold is determined as a component carrier for the user terminal device to transmit an access request or to retransmit the access request. If the network device only allows the user terminal device to send an access request on one component carrier, the component carrier with the best channel performance may be selected and determined as a component for the user terminal device to send an access request or resend the access request. Carrier.

The method further includes a step 130, the network device sends a component carrier indication information to the user terminal device, where the component carrier indication information indicates the at least one component carrier, that is, the network device determines, by using the component carrier indication information, the network device determines that the network device determines The user terminal device notifies the user terminal device of the at least one component carrier that transmits the access request or retransmits the access request.

Based on the component carrier related information, the network device can effectively utilize multiple component carrier resources according to the overall or requested component carrier of the system, thereby improving the communication system. Performance.

2 is a flow chart of a method for controlling a user terminal device to access the network device in a network device in accordance with still another embodiment of the present invention.

Referring to FIG. 2, when at least one component carrier is used for the user terminal device to resend the access request, the method further includes the step 210, the network device acquiring a first backoff time value corresponding to the at least one component carrier, the first backoff time value. And indicating, in step 220, the network device sends the first backoff time value to the user terminal device.

The first backoff time value can be an absolute time value or a time variation relative to an absolute time value. The network device can obtain the first backoff time value in various ways. For example, a predetermined backoff time allocation rule is that the user terminal device randomly assigns a backoff time value as the first backoff time value. For another example, based on the case of at least one component carrier indicated by the component carrier related information, a backoff time value is determined for the at least one component carrier as the first backoff time value. For example, when the total load on at least one component carrier is lower than a predetermined total load threshold, the first backoff time value is a smaller backoff time value, otherwise, the first backoff time value is a larger backoff time. value.

In this way, corresponding to all component carriers that the user terminal device can use to retransmit the access request (ie, retransmission access request), the backoff time value is the same backoff time value, that is, the first backoff time value.

By determining a reasonable backoff time value for the at least one component carrier by the network device, the user terminal device can simplify the selection of the component carrier for retransmitting the access request, and effectively avoid the recurrence of the access request collision.

3 is a flow chart of a method for controlling a user terminal device to access the network device in a network device in accordance with still another embodiment of the present invention.

Referring to FIG. 3, when at least one component carrier is used for the user terminal device to resend the access request, the method further includes the step 310, the network device acquiring a second backoff time value corresponding to one of the at least one component carrier, where The second backoff time value is used to indicate the time when the user terminal device sends the access request again on the component carrier; and in step 320, the network device sends the second backoff time value to the user terminal device. The second backoff time value can be an absolute time value or a time variation relative to an absolute time value. The network device can obtain the second backoff time value in multiple ways. For example, the user terminal device is randomly assigned a backoff time value as the second backoff time value according to a predetermined backoff time allocation principle. For another example, the second backoff time value is determined according to the information indicated by the component carrier related information. For example, when the channel performance between the user equipment and the network equipment is lower than a predetermined channel performance threshold on the component carrier, the second backoff time value is a smaller backoff time value, and conversely, the second backoff The time value is a large backoff time value.

In this way, corresponding to all component carriers that the user terminal device can use to retransmit the access request, the backoff time values are respectively determined, that is, the backoff time values corresponding to each component carrier in the at least one component carrier may be different. of.

By determining a reasonable backoff time value for the at least one component carrier by the network device, the user terminal device can more accurately select the component carrier for retransmitting the access request, and effectively avoid the recurrence of the access request conflict. According to an embodiment of the second aspect of the present invention, there is provided a method for accessing a network device in a user terminal device. The receiving channel of the network device is provided with a plurality of component carriers.

4 is a flow diagram of a method for accessing a network device in a user terminal device, in accordance with one embodiment of the present invention.

Referring to FIG. 4, the method includes the step 410: The user equipment device receives a first component carrier indication information from the network device, where the first component carrier indication information indicates at least one component carrier for the user terminal device to send an access request.

The method further includes the step 420, the user terminal device determining, according to the first component carrier indication information, a first component carrier for transmitting the access request in the at least one component carrier.

The method also includes the step 430 of the user terminal device transmitting an access request to the network device on the first component carrier.

When the user equipment is restricted to send an access request on only one component carrier, The first component carrier indication information indicates only one component carrier for the user terminal device to send an access request. In this case, the user terminal device transmits an access request on the unique component carrier indicated by the first component carrier information to request access to the network device.

When the user terminal device can transmit an access request on multiple component carriers, the first component carrier indication information indicates that the plurality of component carriers are used by the user terminal device to send an access request. In this case, the user equipment device may determine one of the plurality of component carriers indicated by the first component carrier information for transmitting an access request to request access to the network device.

When the user terminal device can transmit an access request on multiple component carriers, the user terminal device can select a component carrier for transmitting the access request in a variety of ways. For example, the user terminal device selects a component carrier that corresponds to the best channel performance between the user terminal device and the network device. For another example, the user equipment selects the component carrier with the highest history access success rate.

Based on the first component carrier indication information, the user equipment can reasonably determine the component carrier used to transmit the access request, thereby effectively utilizing multiple component carrier resources, and improving the performance of the communication system.

Figure 5 is a flow diagram of a method for accessing a network device in a user terminal device in accordance with yet another embodiment of the present invention.

Referring to FIG. 5, after the step 430, the method further includes the step 510, the user terminal device acquires a second component carrier indication information, where the second component carrier indication information indicates the at least one component carrier for the user terminal device to retransmit. Into the request.

The second component carrier indication information may be identical, completely different, or partially identical to the component carrier indicated by the first component carrier indication information. The user terminal can obtain the second component carrier indication information in multiple manners. For example, the second component carrier indication information is received from the network device, that is, the candidate component carrier used by the user terminal device to retransmit the access request may be different from the candidate component carrier used by the user terminal device to first transmit the access request. For another example, the first component carrier indication information is set to the second component carrier indication information, that is, the candidate component carrier used by the user terminal device to resend the access request and the candidate component carrier used by the user terminal device to send the access request for the first time. the same. For another example, the user terminal device will be The component carrier indication information corresponding to the secondary retransmission access request is set as the second component carrier indication information.

The method also includes the step 520 of the user terminal device obtaining a first backoff time value. One less component carrier. The first backoff time value is used to indicate when the user terminal device sends the access request again. That is to say, the backoff time value corresponding to the user terminal device transmitting the access request again on different component carriers is the same.

The first backoff time value can be an absolute time value or a time variation relative to an absolute time value. The user terminal device can obtain the first backoff time value in a variety of ways.

In one embodiment, the user terminal device receives a first backoff time value from the network device. For example, the user terminal device receives the first backoff time value T1 from the network device with respect to the time t1 at which the access request is first transmitted, and the user terminal device can transmit the access request again at any time after the time t1 + T1. For another example, the user terminal device receives the first backoff time value T2 from the network device with respect to the time t2 at which the first backoff time value is received, and the user terminal device can transmit the access request again at any time after the time t2+T2. For another example, if the user terminal device receives the first backoff time value from the network device as the absolute time t3, the user terminal device may send the access request again at any time after the time t3.

In still another embodiment, the user terminal device can determine the first backoff time value by itself. For example, the first backoff time value is randomly generated according to a predetermined backoff time generation rule.

The method further includes a step 530, the user equipment, according to the second component carrier indication information, determining, in the at least one component carrier for the user terminal device to resend the access request, a second component carrier for retransmitting the access request. .

The user terminal device can determine the second component carrier in a variety of ways.

When the user terminal device is restricted to transmit the access request again on only one component carrier, the second component carrier indication information indicates only one component carrier for the user terminal device to resend the access request. In this case, the user terminal device transmits the access again on the unique component carrier (ie, the second component carrier) indicated by the second component carrier information. Request to access the network device.

When the user terminal device can transmit the access request again on the plurality of component carriers, the second component carrier indication information indicates that the plurality of component carriers are used for the user terminal device to resend the access request. In this case, the user equipment device may determine one component carrier (ie, the second component carrier) among the multiple component carriers indicated by the second component carrier information for retransmitting the access request to request access to the network device. .

When the user terminal device can retransmit the access request on the plurality of component carriers, the user terminal device can select the second component carrier for retransmitting the access request in a plurality of manners. For example, the user terminal device selects a component carrier corresponding to the channel performance between the user terminal device and the network device as the second component carrier. For another example, the user equipment selects the component carrier with the highest history access success rate as the second component carrier.

The method further includes the step 540, the user terminal device transmitting the access request to the network device again on the second component carrier at the time indicated by the first backoff time value.

Since the backoff time value corresponding to all the component carriers that the user terminal device can use to resend the access request is a backoff time value, that is, the first backoff time value, the user terminal device does not need to consider the backoff when determining the second component carrier. The factor of time value. Therefore, the process of retransmitting the access request by the user terminal device is simplified, thereby reducing the processing delay.

In addition, based on the second component carrier indication information, the user terminal device can determine the component carrier for retransmitting the access request reasonably, thereby effectively utilizing the plurality of component carrier resources, and improving the performance of the communication system.

6 is a flow chart of a method for accessing a network device in a user terminal device in accordance with still another embodiment of the present invention.

Referring to FIG. 6, after step 430, the method further includes a step 610, the user terminal acquires a third component carrier indication information, where the third component carrier indication information indicates at least one component carrier for the user terminal device to resend the access. request.

The third component carrier indication information may be identical, completely different, or partially identical to the component carrier indicated by the first component carrier indication information. The user terminal can obtain the third component carrier indication information in multiple manners. For example, the third component carrier indication information is received from the network device. For another example, setting the first component carrier indication information to the third component carrier finger Show information.

The method further includes a step 620, the user terminal acquiring at least one backoff time value, each of the backoff time values respectively corresponding to each of the at least one component carrier for the user terminal device to resend the access request, each backoff time The value is used to indicate when the user terminal device resends the access request on the corresponding component carrier. That is to say, each component carrier has its own corresponding backoff time value.

Each backoff time value can be an absolute time value or a time variation relative to an absolute time value. The user terminal device can obtain at least one backoff time value in a variety of ways.

In one embodiment, the user terminal device receives a backoff time value from the network device corresponding to each of the at least one component carrier for the user terminal device to retransmit the access request.

In still other embodiments, the user terminal device may determine at least the backoff time value by itself. For example, based on a predetermined backoff time generation rule, a backoff time value is randomly generated for each of the at least one component carrier for the user terminal device to retransmit the access request.

The method further includes a step 630, the user terminal determining, according to the at least one backoff time value and the third component carrier indication information, a third component carrier for re-using at least one component carrier for the user terminal device to resend the access request Send an access request.

The user terminal can determine the third component carrier in a variety of ways.

When the user terminal device is restricted to retransmit the access request on only one component carrier, the third component carrier indication information indicates only one component carrier for the user terminal device to resend the access request. In this case, the user terminal device retransmits the access request on the unique component carrier (i.e., the third component carrier) indicated by the third component carrier information to request access to the network device.

When the user terminal device can transmit the access request again on the plurality of component carriers, the third component carrier indication information indicates that the plurality of component carriers are used by the user terminal device to resend the access request. In this case, the user equipment device may determine one component carrier (ie, the third component carrier) among the plurality of component carriers indicated by the third component carrier information for Send an access request to request access to the network device.

When the user terminal device can transmit the access request again on the plurality of component carriers, the user terminal device can select the third component carrier for retransmitting the access request in a plurality of manners. In one embodiment, the user equipment equipment selects the component carrier with the smallest backoff time value as the third component carrier. In still another embodiment, the user equipment selects a component carrier having a backoff time value less than a predetermined backoff time value threshold and a load amount less than a predetermined load amount threshold as the third component carrier.

The method further includes the step 640 of the user terminal transmitting the access request to the network device again on the third component carrier at the time indicated by the backoff time value corresponding to the third component carrier.

Since all component carriers corresponding to the user terminal device that can be used to retransmit the access request have respective backoff time values, when determining the third component carrier, the user terminal device can comprehensively consider the backoff time value and the third component carrier indication. The characteristics of the component carrier indicated by the information, and the component carrier for retransmitting the access request are reasonably determined, thereby effectively utilizing multiple component carrier resources, and improving the performance of the communication system. The foregoing method for transmitting an access request and resending the request may be used in various scenarios of the communication system, such as initial access of the user equipment by the user equipment, handover of the user equipment, uplink/downlink data arrival in the case of uplink unsynchronization, and The wireless link failed. According to an embodiment of the third aspect of the present invention, there is provided a control apparatus for controlling a user terminal device to access the network device in a network device. The receiving channel of the network device is provided with a plurality of component carriers.

Figure 7 is a block diagram of a control device 700 in accordance with one embodiment of the present invention.

Referring to Figure 7, control device 700 includes a first acquisition device 710, a determination device 720, and a first transmission device 730.

The first obtaining means 710 is configured to acquire component carrier related information about the plurality of component carriers. Determining means 720 for using multiple component carriers based on component carrier related information And determining, by the at least one component carrier, the user terminal device to send an access request or send the access request again. The first transmitting device 730 is configured to send a component carrier indication information to the user terminal device, where the component carrier indication information indicates at least one component carrier.

Figure 8 is a block diagram of a control device 800 in accordance with yet another embodiment of the present invention.

Referring to FIG. 8, when at least one component carrier is used for the user terminal device to resend the access request, the control device 800 further includes the second obtaining device 810 and the second transmitting device.

820.

The second acquiring device 810 is configured to acquire a first backoff time value corresponding to the at least one component carrier, where the first backoff time value is used to indicate a time when the user terminal device sends the access request again. The second sending device 820 is configured to send the first backoff time value to the user terminal device.

Figure 9 is a block diagram of a control device 900 in accordance with yet another embodiment of the present invention.

Referring to FIG. 9, when at least one component carrier is used for the user terminal device to resend the access request, the control device 900 further includes a third obtaining device 910 and a third transmitting device 920.

The third obtaining device 910 is configured to acquire a second backoff time value corresponding to one of the at least one component carrier, where the second backoff time value is used to indicate that the user equipment device sends the access request again on the component carrier. time. The third transmitting device 920 is configured to send a second backoff time value to the user terminal device. According to an embodiment of the fourth aspect of the present invention, there is provided an access device for accessing a network device in a user terminal device. The receiving channel of the network device is provided with a plurality of component carriers.

Figure 10 is a block diagram of an access device 1000 in accordance with one embodiment of the present invention. The access device 1000 includes a receiving device 1010, a first determining device 1020, and a first transmitting device 1030.

The receiving device 1010 is configured to receive, from the network device, a first component carrier indication information, where the first component carrier indication information indicates the at least one component carrier for the user terminal device to send an access request. The first determining device 1020 is configured to determine, according to the component carrier indication information, a first component carrier for transmitting access in the at least one component carrier. Request. The first sending device 1030 is configured to send an access request to the network device on the first component carrier.

Figure 11 is a block diagram of an access device 1 100 in accordance with yet another embodiment of the present invention. Referring to FIG. 1, the access device 1100 further includes a first obtaining device 1 1 10, a second determining device 1 120, and a second transmitting device 1 130.

The first obtaining means 1110 is configured to acquire a second component carrier indication information, the second component carrier indication information indicating at least one component carrier for the user terminal device to resend the access request. The first acquiring device 1 1 10 is further configured to acquire a first backoff time value, where the first backoff time value corresponds to at least one component carrier used by the user terminal device to resend the access request, where the first backoff time value is used. Indicates the time when the user terminal device sends the access request again.

The second determining means 1120 is configured to determine, according to the second component carrier indication information, a second component carrier for retransmitting the access request in the at least one component carrier for the user terminal device to resend the access request. The second transmitting device 1 130 is configured to resend an access request to the network device on the second component carrier at the time indicated by the first backoff time value.

Figure 12 is a block diagram of an access device 1200 in accordance with yet another embodiment of the present invention. Referring to FIG. 12, the access device 1200 further includes a second obtaining device 1210, a third determining device 1220, and a third transmitting device 1230.

The second obtaining means 1210 is configured to acquire a third component carrier indication information indicating at least one component carrier for the user terminal device to resend the access request. The second obtaining device 1210 is further configured to: acquire each component carrier of the at least one component carrier that is requested by the at least one backoff, where each backoff time value is used to indicate that the user equipment device sends the access request again on the corresponding component carrier. time.

The third determining device 1220 is configured to determine, according to the at least one backoff time value and the third component carrier indication information, that a third component carrier is used for retransmission in the at least one component carrier used for the user terminal device to resend the access request. Into the request. The third transmitting device 1230 is configured to use the time indicated by the backoff time value corresponding to the third component carrier, The access request is sent again to the network device on the third component carrier.

In one embodiment, the backoff time value corresponding to the third component carrier is the smallest of the at least one backoff time value. It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim. In addition, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The plurality of means recited in the system claims can also be implemented by a device in software or hardware. The first, second, etc. words are used to denote names and do not represent any particular order.

Claims

Claim

A method for controlling a user terminal device to access the network device in a network device, the receiving channel of the network device being provided with a plurality of component carriers, the method comprising the steps of:

The method according to claim 1, wherein, when the at least one component carrier is used by the user terminal device to send the access request again, after the step B, the method further includes the following steps:

Obtaining a first backoff time value corresponding to the at least one component carrier, the first backoff time value being used to indicate a time when the user terminal device transmits the access request again;

- transmitting the first backoff time value to the user terminal device.

Obtaining a second backoff time value corresponding to one of the at least one component carrier, the second backoff time value being used to instruct the user terminal device to resend the access request on the component carrier Time; and

- transmitting the second backoff time value to the user terminal device.

4. The method according to claim 1, wherein the component carrier related information And including at least one of the following information: a number of access requests received by each of the plurality of component carriers, an existing load of each of the plurality of component carriers, and the plurality of components Each component carrier in the carrier corresponds to channel performance of the user terminal device.

A method for accessing a network device in a user terminal device, the receiving channel of the network device being provided with a plurality of component carriers, the method comprising the steps of: a. receiving a first from the network device Component carrier indication information, the first component carrier indication information indicating at least one component carrier for the user terminal device to send an access request;

c transmitting the access request to the network device on the first component carrier.

The method according to claim 5, further comprising the following steps after the step c:

Obtaining a second component carrier indication information, the second component carrier indication information indicating at least one component carrier for the user terminal device to resend the access request;

Obtaining a first backoff time value, the first backoff time value corresponding to the at least one component carrier used by the user equipment device to resend the access request, the first backoff time value being used to indicate the Time when the user terminal device sends the access request again;

Determining, according to the second component carrier indication information, a second component carrier for retransmitting the access in the at least one component carrier for the user terminal device to resend the access request Request;

- transmitting the access request to the network device again on the second component carrier at the time indicated by the first backoff time value.

7. The method according to claim 5, wherein after the step c, the method further comprises the steps of:

Obtaining a third component carrier indication information, the third component carrier indication information indicating at least one component carrier for the user terminal device to resend the access request;

Obtaining at least one backoff time value, each backoff time value respectively corresponding to each of the at least one component carrier for the user terminal device to resend the access request, each backoff time value being used And indicating a time when the user terminal device resends the access request on a corresponding component carrier;

Determining a third component carrier in the at least one component carrier for the user terminal device to resend the access request according to the at least one backoff time value and the third component carrier indication information Resending the access request; and

- transmitting the access request to the network device again on the third component carrier at a time indicated by a backoff time value corresponding to the third component carrier.

8. The method according to claim 7, wherein the backoff time value corresponding to the third component carrier is the smallest of the at least one backoff time value.

A control device for controlling a user terminal device to access the network device in a network device, the receiving channel of the network device is provided with a plurality of component carriers, and the control device comprises:

a determining device, configured to determine, according to the component carrier related information, at least one component carrier in the plurality of component carriers, for the user terminal device to send the access request or to send the access request again ; as well as

A first transmitting device, configured to send a component carrier indication information to the user terminal device, where the component carrier indication information indicates the at least one component carrier.

The control device according to claim 9, wherein, when the at least one component carrier is used by the user terminal device to send the access request again, the method further includes:

a second acquiring device, configured to acquire a first backoff time value corresponding to the at least one component carrier, where the first backoff time value is used to indicate a time when the user terminal device sends the access request again; as well as

A second transmitting device is configured to send the first backoff time value to the user terminal device.

a third acquiring device, configured to acquire a second backoff time value corresponding to one of the at least one component carrier, where the second backoff time value is used to indicate that the user equipment device is in the component carrier The time at which the access request is sent again;

A third transmitting device is configured to send the second backoff time value to the user terminal device.

12. An access device for accessing a network device in a user terminal device, the receiving channel of the network device being provided with a plurality of component carriers, the access device comprising: a receiving device for The network device receives a first component carrier indication information, where the first component carrier indication information indicates at least one component carrier for the user terminal device to send an access request;

The access device of claim 12, further comprising:

a first obtaining device, configured to acquire a second component carrier indication information, the second component carrier indication information indicating at least one component carrier for the user terminal device to resend the access request;

The first acquiring device is further configured to acquire a first backoff time value, where the first backoff time is less than one component carrier, and the first backoff time value is used to indicate a time when the user terminal device sends the access request again;

a second determining means, configured to determine, according to the second component carrier indication information, a second component carrier in the at least one component carrier used by the user equipment equipment to resend the access request And the second sending device is configured to resend the access request to the second component carrier at a time indicated by the first backoff time value. Network equipment.

The access device according to claim 12, further comprising:

a second obtaining means, acquiring a third component carrier indication information, the third component carrier indication information indicating at least one component carrier for the user terminal device to resend the access request;

The second acquiring apparatus is further configured to acquire at least one backoff time value, where each backoff time value respectively corresponds to each of the at least one component carrier used by the user equipment equipment to resend the access request Each backoff time value is used to indicate a time when the user terminal device resends the access request on a corresponding component carrier; a third determining device configured to use the at least one backoff time value and the a third component carrier indication information, in the at least one component carrier for the user terminal device to resend the access request, determining a third component carrier for resending the access request;

a third transmitting device, configured to resend the access request to the network device on the third component carrier at a time indicated by a backoff time value corresponding to the third component carrier.

The access device according to claim 14, wherein the backoff time value corresponding to the third component carrier is the smallest of the at least one backoff time value.